Document Detail


Cardiovascular Protection and Antioxidant Activity of the Extracts from the Mycelia of Cordyceps Sinensis Act Partially Via Adenosine Receptors.
MedLine Citation:
PMID:  23192916     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Mycelia of cultured Cordyceps sinensis (CS) is one of the most common substitutes for natural CS and was approved for arrhythmia in China. However, the role of CS in ameliorating injury during ischemia-reperfusion (I/R) is still unclear. We examined effects of extracts from CS on I/R and investigated the possible mechanisms. Post-ischemic coronary perfusion pressure, ventricular function, and coronary flow were measured using the Langendorff mouse heart model. Oxidative stress of cardiac homogenates was performed using an ELISA. Our results indicate that CS affords cardioprotection possibly through enhanced adenosine receptor activation. Cardioprotection was demonstrated by reduced post-ischemic diastolic dysfunction and improved recovery of pressure development and coronary flow. Treatment with CS largely abrogates oxidative stress and damage in glucose- or pyruvate-perfused hearts. Importantly, observed reductions in oxidative stress [glutathione disulfide (GSSG)]/[GSSG + glutathione] and [malondialdehyde (MDA)]/[superoxide dismutase + MDA] ratios as well as the resultant damage upon CS treatment correlate with functional markers of post-ischemic myocardial outcome. These effects of CS were partially blocked by 8-ρ-sulfophenyltheophylline, an adenosine receptor antagonist. Our results demonstrate a suppressive role of CS in ischemic contracture. Meanwhile, the results also suggest pre-ischemic adenosine receptor activation may be involved in reducing contracture in hearts pretreated with CS. Copyright © 2012 John Wiley & Sons, Ltd.
Authors:
Xiao-Feng Yan; Zhong-Miao Zhang; Hong-Yi Yao; Yan Guan; Jian-Ping Zhu; Lin-Hui Zhang; Yong-Liang Jia; Ru-Wei Wang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-28
Journal Detail:
Title:  Phytotherapy research : PTR     Volume:  -     ISSN:  1099-1573     ISO Abbreviation:  Phytother Res     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8904486     Medline TA:  Phytother Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 John Wiley & Sons, Ltd.
Affiliation:
The Second Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, 310009, China. Yanxiaofeng0804@sina.com.
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